Global Patent Index - EP 0419868 A1

EP 0419868 A1 19910403 - Method of in-bath smelting reduction of metals and in-bath smelting reduction furnace.

Title (en)

Method of in-bath smelting reduction of metals and in-bath smelting reduction furnace.

Title (de)

Verfahren zur Schmelzreduktion von Metallen und Schmelzreduktionsofen.

Title (fr)

Procédé et appareil pour la réduction en bain de fusion d'oxydes métalliques.

Publication

EP 0419868 A1 19910403 (EN)

Application

EP 90116468 A 19900828

Priority

  • JP 22041989 A 19890829
  • JP 22755389 A 19890904
  • JP 33326289 A 19891222

Abstract (en)

A method of in-bath smelting reduction comprises the step of selectively supplying powder materials into a gas upflow region or a gas downflow region within a furnace during the time that oxygen-containing gas is concurrently being blown into the furnace from a top lance. Also disclosed is an in-bath smelting reduction furnace for carrying out the method.

IPC 1-7

C21B 13/00; C21B 13/14

IPC 8 full level

C21B 13/00 (2006.01); C21B 13/14 (2006.01)

CPC (source: EP US)

C21B 13/0006 (2013.01 - EP US); C21B 13/0026 (2013.01 - EP US); C21B 13/14 (2013.01 - EP US); C21B 2100/22 (2017.04 - EP US); C21B 2100/66 (2017.04 - EP US); Y02P 10/134 (2015.11 - EP US)

Citation (search report)

  • [A] DE 3418085 A1 19851128 - KLOECKNER CRA TECH [DE]
  • [A] EP 0079182 A1 19830518 - BRITISH STEEL CORP [GB]
  • [XP] PATENT ABSTRACTS OF JAPAN vol. 13, no. 487 (C-649)(3835), 6th November 1989; & JP - A - 1191719 (NIPPON STEEL) 01.08.1989 (cat. X)
  • [XP] PATENT ABSTRACTS OF JAPAN vol. 13, no. 491 (C-650)(3839), 7th November 1989; & JP - A - 1195216 (NIPPON STEEL) 07.08.1989 (cat. X)
  • [XP] PATENT ABSTRACTS OF JAPAN vol. 13, no. 589 (C.670)(3937), 25th December 1989; & JP - A - 1247516 (NIPPON STEEL) 03.10.1989
  • [A] PATENT ABSTRACTS OF JAPAN vol. 10, no. 120 (C-343), 6th May 1986; & JP - A - 60245716 (SHIN NIPPON SEITETSU) 05.12.1985; & JP - B - 6224486 (cat. D)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 11, no. 24 (C-399)(2471), 23rd January 1987; & JP - A - 61199009 (NIPPON TEKKO RENMEI) 03.09.1986 (cat. D)

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

EP 0419868 A1 19910403; EP 0419868 B1 19941109; AU 6190490 A 19910307; AU 632161 B2 19921217; CA 2024184 A1 19910301; DE 69014057 D1 19941215; DE 69014057 T2 19950629; US 5135572 A 19920804

DOCDB simple family (application)

EP 90116468 A 19900828; AU 6190490 A 19900829; CA 2024184 A 19900828; DE 69014057 T 19900828; US 56928290 A 19900817